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Geological Applications of Electron Energy-Loss Spectroscopy

Published online by Cambridge University Press:  02 July 2020

Laurence A.J. Garvie  and
Peter R. Buseck
Laurence A.J. Garvie
Affiliation:
Department of Geology, Arizona State University, Tempe, AZ85287-1404. e-mail, lgarvie@asu.edu
Peter R. Buseck
Affiliation:
Department of Geology, Arizona State University, Tempe, AZ85287-1404. e-mail, lgarvie@asu.edu Department of Chemistry/Biochemistry, Arizona State University, Tempe, AZ85287-1604
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EELS with a TEM is an established spectroscopic technique that is used to provide both qualitative and quantitative chemical information. Analysis of EELS spectral shapes provides information on the coordination, oxidation state, and spin states of atoms in minerals. Despite the availability of parallel EELS detectors for almost fifteen years, geological applications are relatively rare, mainly because of the high level of expertise required by the operator in both acquiring and analyzing the data. For example, core-loss edges can be difficult to see on the background and elemental quantification is not yet routine.

The goal of this review is to discuss the uses and interpretations of the EELS spectra of a range of minerals. We will focus on the interpretation of the electron-loss near-edge structures (ELNES) of the core-loss edges and concentrate primarily on: a) determination of the oxidation state of transition elements and other metals, and b) identification of local anion and cation coordinations. In addition, we will explore the potential of ELNES as a bonding probe.

Type
Electron Energy-Loss Spectroscopy (EELS) and Imaging
Information
Microscopy and Microanalysis , Volume 6 , Issue S2: Proceedings: Microscopy & Microanalysis 2000, Microscopy Society of America 58th Annual Meeting, Microbeam Analysis Society 34th Annual Meeting, Microscopical Society of Canada/Societe de Microscopie de Canada 27th Annual Meeting, Philadelphia, Pennsylvania August 13-17, 2000 , August 2000 , pp. 168 - 169
Copyright
Copyright © Microscopy Society of America

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References

1.Garvie, L.A.J, and Buseck, P.R. (1999) Electron-beam induced solid-state reduction of Ce(IV) to Ce(III) in cerianite (Ce02) studied by electron energy-loss spectroscopy (EELS). Journal of Physics and Chemistry of Minerals, 60, 1943–1947.Google Scholar
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